add test suggest-clone-in-macro-issue-139253.rs

Signed-off-by: xizheyin <[email protected]>

Author: xizheyin

tests/ui/typeck/suggestions/suggest-clone-in-macro-issue-139253.rs

@@ -0,0 +1,19 @@
+#[derive(Debug, Clone)]
+struct Struct { field: S }
+
+#[derive(Debug, Clone)]
+struct S;
+
+macro_rules! expand {
+    ($ident:ident) => { Struct { $ident } }
+}
+
+fn test1() {
+    let field = &S;
+    let a: Struct = dbg!(expand!(field)); //~ ERROR mismatched types [E0308]
+    let b: Struct = dbg!(Struct { field }); //~ ERROR mismatched types [E0308]
+    let c: S = dbg!(field); //~ ERROR mismatched types [E0308]
+    let c: S = dbg!(dbg!(field)); //~ ERROR mismatched types [E0308]
+}
+
+fn main() {}

tests/ui/typeck/suggestions/suggest-clone-in-macro-issue-139253.stderr

@@ -0,0 +1,41 @@
+error[E0308]: mismatched types
+  --> $DIR/suggest-clone-in-macro-issue-139253.rs:13:34
+   |
+LL |     let a: Struct = dbg!(expand!(field));
+   |                                  ^^^^^ expected `S`, found `&S`
+   |
+help: consider using clone here
+   |
+LL |     let a: Struct = dbg!(expand!(field: field.clone()));
+   |                                       +++++++++++++++
+
+error[E0308]: mismatched types
+  --> $DIR/suggest-clone-in-macro-issue-139253.rs:14:35
+   |
+LL |     let b: Struct = dbg!(Struct { field });
+   |                                   ^^^^^ expected `S`, found `&S`
+   |
+help: consider using clone here
+   |
+LL |     let b: Struct = dbg!(Struct { field: field.clone() });
+   |                                        +++++++++++++++
+
+error[E0308]: mismatched types
+  --> $DIR/suggest-clone-in-macro-issue-139253.rs:15:16
+   |
+LL |     let c: S = dbg!(field);
+   |                ^^^^^^^^^^^ expected `S`, found `&S`
+   |
+   = note: this error originates in the macro `dbg` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error[E0308]: mismatched types
+  --> $DIR/suggest-clone-in-macro-issue-139253.rs:16:16
+   |
+LL |     let c: S = dbg!(dbg!(field));
+   |                ^^^^^^^^^^^^^^^^^ expected `S`, found `&S`
+   |
+   = note: this error originates in the macro `dbg` (in Nightly builds, run with -Z macro-backtrace for more info)
+
+error: aborting due to 4 previous errors
+
+For more information about this error, try `rustc --explain E0308`.